Method 1 : using the max, sensitive to outliers NO
Method 2 : mu + 3sigma (mu + sigma), mu is also sensitive to outliers NO
Method 3 : 2k, very strange NO
Method 4 : skewness, appropriate YES
Method 5 : mu + 3sigma_left (mu + sigma_left)
Method 6 : anti hubs, appropriate YES
Method 7 : 3MAD (MAD), maybe ? but median values are sometimes equal to zero…
Method 8 : mode + 3sigma (mode + sigma)